From 5178597af3139c1ce9ac95971729468eda5625d7 Mon Sep 17 00:00:00 2001 From: Stefan Hajnoczi Date: Mon, 27 May 2013 15:28:51 +0200 Subject: [PATCH 34/38] tests: set MALLOC_PERTURB_ to expose memory bugs Message-id: <1379499002-5231-3-git-send-email-mreitz@redhat.com> Patchwork-id: 54433 O-Subject: [RHEL-7.0 qemu-kvm PATCH 2/6] tests: set MALLOC_PERTURB_ to expose memory bugs Bugzilla: 1006959 RH-Acked-by: Markus Armbruster RH-Acked-by: Fam Zheng RH-Acked-by: Kevin Wolf BZ: 1006959 glibc wipes malloc(3) memory when the MALLOC_PERTURB_ environment variable is set. The value of the environment variable determines the bit pattern used to wipe memory. For more information, see http://udrepper.livejournal.com/11429.html. Set MALLOC_PERTURB_ for gtester and qemu-iotests. Note we pick a random value from 1 to 255 to expose more bugs. If you need to reproduce a crash use 'show environment' in gdb to extract the MALLOC_PERTURB_ value from a core dump. Both make check and qemu-iotests pass with MALLOC_PERTURB_ enabled. Signed-off-by: Stefan Hajnoczi Reviewed-by: Eric Blake Message-id: 1369661331-28041-1-git-send-email-stefanha@redhat.com Signed-off-by: Anthony Liguori (cherry picked from commit 04129606170ec9011d4952b4f22c368679bedbf9) Signed-off-by: Max Reitz --- tests/Makefile | 5 ++++- tests/qemu-iotests/check | 3 ++- 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/tests/Makefile b/tests/Makefile index a307d5a..c107489 100644 --- a/tests/Makefile +++ b/tests/Makefile @@ -171,6 +171,7 @@ GCOV_OPTIONS = -n $(if $(V),-f,) $(patsubst %, check-qtest-%, $(QTEST_TARGETS)): check-qtest-%: $(check-qtest-y) $(if $(CONFIG_GCOV),@rm -f *.gcda */*.gcda */*/*.gcda */*/*/*.gcda,) $(call quiet-command,QTEST_QEMU_BINARY=$*-softmmu/qemu-system-$* \ + MALLOC_PERTURB_=$${MALLOC_PERTURB_:-$$((RANDOM % 255 + 1))} \ gtester $(GTESTER_OPTIONS) -m=$(SPEED) $(check-qtest-$*-y),"GTESTER $@") $(if $(CONFIG_GCOV),@for f in $(gcov-files-$*-y); do \ echo Gcov report for $$f:;\ @@ -180,7 +181,9 @@ $(patsubst %, check-qtest-%, $(QTEST_TARGETS)): check-qtest-%: $(check-qtest-y) .PHONY: $(patsubst %, check-%, $(check-unit-y)) $(patsubst %, check-%, $(check-unit-y)): check-%: % $(if $(CONFIG_GCOV),@rm -f *.gcda */*.gcda */*/*.gcda */*/*/*.gcda,) - $(call quiet-command,gtester $(GTESTER_OPTIONS) -m=$(SPEED) $*,"GTESTER $*") + $(call quiet-command, \ + MALLOC_PERTURB_=$${MALLOC_PERTURB_:-$$((RANDOM % 255 + 1))} \ + gtester $(GTESTER_OPTIONS) -m=$(SPEED) $*,"GTESTER $*") $(if $(CONFIG_GCOV),@for f in $(gcov-files-$(subst tests/,,$*)-y); do \ echo Gcov report for $$f:;\ $(GCOV) $(GCOV_OPTIONS) $$f -o `dirname $$f`; \ diff --git a/tests/qemu-iotests/check b/tests/qemu-iotests/check index 432732c..74628ae 100755 --- a/tests/qemu-iotests/check +++ b/tests/qemu-iotests/check @@ -214,7 +214,8 @@ do start=`_wallclock` $timestamp && echo -n " ["`date "+%T"`"]" [ ! -x $seq ] && chmod u+x $seq # ensure we can run it - ./$seq >$tmp.out 2>&1 + MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(($RANDOM % 255 + 1))} \ + ./$seq >$tmp.out 2>&1 sts=$? $timestamp && _timestamp stop=`_wallclock` -- 1.7.1